Thank you. But, from what I've read, I don't need an access token for getting info from the "user" table, unless it is some more complex data (like friends users). Also, the reason that I am trying to get the current user's uid is for generating access token.
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LichteOct 15 '11 at 15:18

Using me() means you have a connected user, so you need an access_token to prove that!
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ifaourOct 16 '11 at 10:45

Ok, then how can I get my UID without access token, even if I don't use FQL?
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LichteOct 21 '11 at 9:23

programatically, if you don't authorize your app then you can't! you can manually visit the explorer and get your uid.
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ifaourOct 22 '11 at 10:13